Crushing, Screening & Conveying

Crushing, Screening & Conveying

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Retention time for a nickel ore trommel (2 replies)

4 days ago

Hello everyone,

I have been looking for a formula to the retention time on a mineral rotatory trommel but I'm unsure about one I found in the internet. I want to know if there is a formula for that so I can calculate the average or theorical retention time for the trommel that is coming to the mine I work with before we have to do the hot testing of the equipment.

In my team we have run a few test on a minor scale trommel on site but these one has a closed processing of the minerals, different to the new one that has a continous feed and discharge mineral screening and processing.

I really appreciate your help. 

3 days ago
David 3 days ago

show us your math

3 days ago
SmartDog 3 days ago

Depends on the feed size distribution and the trommel deck openings.  Also wether a single deck or multi-deck (and yes they exist).  Also need to figure out trommel length and diameter (surface area) and speed of rotation.  But in general you are talking underr 2 mintues (often under a minute).

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